.ContentTable {
    padding: 0px;
    margin: 0px;
    /*设置相邻单元格的边框间的距离*/
    border-spacing: 0;
    /*表格设置合并边框模型*/
    border-collapse: collapse;
    text-align: center;
    font-family: verdana, arial, sans-serif;
    font-size: 16px;
    color: #495060;
}

.ContentTable tbody {
    display: block;
    height: 500px;
    overflow-y: scroll;
}

.ContentTable thead,tbody tr {
    display: table;
    width: 100%;
    table-layout: fixed;
}


/*关键设置：滚动条默认宽度是16px 将thead的宽度减16px*/

.ContentTable thead {
    width: calc( 100% - 17px);
    font-size: 16px;
}

.ContentTable thead th {
    border: 1px solid #495060;
    background: #f8f8f9;
}
.ContentTable tbody th {
    border: 1px solid #495060;
    /* background: #f8f8f9; */
    border-top: none;
}
.ContentTable tr {
    /*background: #FFF;*/
    height: 38px;
    line-height: 38px;
}

.ContentTable td {
    line-height: 38px;
    border: 1px solid #495060;
    border-top: none;    
}